A South Carolina Gamecocks fan fatally shot a friend over a $20 bet on a weekend football game, authorities said.

James Walter Quick watched the South Carolina-Clemson game Saturday at his friend's house in Lexington, S.C., about 100 miles south of Charlotte. The Gamecocks came from behind and won, 31-28.

Quick celebrated.

But his friend, Clemson fan Richard Allen Johnson, said the Tigers shouldn't have lost and refused to pay, authorities said. So Quick left the house and retrieved a high-powered rifle from his Chevrolet Corsica.

'He went back in and told Richard, `I want my money or I'm going to shoot you,' ' said Lexington County Sheriff James Metts, adding that both had been drinking beer.